RYDER P GWINN MD
NPI 1700945607
Neurological Surgery in Seattle, WA
About Ryder P Gwinn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYDER P GWINN MD (NPI 1700945607) is an individual neurological surgery provider in Seattle, Washington, licensed in Washington (MD00043991) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Evergreenhealth Medical Center, and maintains a secondary practice location in Seattle.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ryder P Gwinn Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Ryder Gwinn reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bellevue, WA 98004
- Reassigned Medicare billing, Washington enrollment
- 566 clinicians in this Medicare group
Kirkland, WA 98034
- Reassigned Medicare billing, Washington enrollment
- 1,074 clinicians in this Medicare group
Anchorage, AK 99508
- Reassigned Medicare billing, Texas enrollment
- 1,373 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Evergreenhealth Medical Center
Acute Care Hospitals · Kirkland, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98122 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98122
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ryder Gwinn's NPI number?
The NPI number for Ryder Gwinn is 1700945607. It was assigned to this individual provider in the NPPES registry on December 6, 2006.
Where is Ryder Gwinn located?
Ryder Gwinn practices at 801 Broadway Ste 901, Seattle, WA 98122. The listed phone number is (206) 386-3880.
What is Ryder Gwinn's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Ryder Gwinn enrolled in Medicare?
Yes. Ryder Gwinn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ryder Gwinn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryder Gwinn reassigns Medicare benefits to 3 organizations: Overlake Medical Clinics LLC (Bellevue, WA), King County Public Hospital District No 2 (Kirkland, WA) and Alaska Native Tribal Health Consortium (Anchorage, AK). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ryder Gwinn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryder Gwinn accept?
Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Ryder Gwinn as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ryder Gwinn affiliated with any hospitals?
According to CMS data, Ryder Gwinn is affiliated with Evergreenhealth Medical Center.
When was this NPI record last updated?
The NPPES record for Ryder Gwinn was last updated on May 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.